Stand-valve tap.



H. E. HAMILTON.

STAND VALVE TAP.

APPLICATION FILED mAvzs, ms.

Patented Aug. 27, 1918.

WTTED STATES PATENT UFFTE HARRY E. HAMILTON, 0F BRIDGEPORT, ILLINOIS.

STAND-VALVE TAP.

reverse.

Application filed May 25, 1918.

To all whom it may concern:

Be it known that I, HARRY ELIIAMILTON5 a citizen of the United States, residing at Bridgeport, in the county of Lawrence and Ftate of Illinois, have invented a new and us; Stand-Valve Tap of which the following is a specification.

The subject of the present. invention is a valve tap intended for use in conjunction with stand pipe valves.

The main object of the invention is the provision of a valve tap which may be attached to the operating valve of a pump and engaged with the stand valve when de sired.

Another object of the invention is the provision of a. valve tap with means for pounding down or seating the stand valve.

)1 further object of the invention is the provision of means for normally retaining the tap out of engagement with the valve.

The invention also contemplates generally improving the construction and enhancing the utility of valve taps.

Tl'ith the foregoing and other objects in view which may hereinafter more fully appear, the invention resides in the combination and arrangen'ient of parts and in the details of construction hereinafter more fully described and claimed, it being understood that. changes in the precise embodiment of the invention herein disclosed'can be made within the scope of what is claimed without departing from the spirit of the invention.

A practical embodiment of the invention is shown in the accompanying drawing, wherein:-

Figure 1 is a view in elevation of a tap constructed in accordance with the inven tion, a fragment of the pump mechanism to which it is applied being shown partly in elevation and partly in section;

Fig. 2 is a view in longitudinal section of the tap;

Fig. 8 is a cross section taken on the line 3-3 of Fig. 2;

Fig. at is a view in elevation of a fragmentary detail.

Referring to the drawing by numerals of reference:

The usual stand pipe or working barrel of a pump is indicated by the numeral 1 and within the pipe the working valve is reciprocable. The working valve consists of a cage 2, within which is loosely con- Specification of Letters Patent.

'by a diametrically Patented Aug. 27', 1918. Serial No. 238,565.

fined the ball valve 3 which is adapted to rest on its seat in the member 1. Threaded or otherwise secured below the member 1 are the usual cups 5.

Threaded to the lowermost cup 5 is a coupling nut 6 which may be secured or locked in place by a pin 7 to prevent the nut accidentally unscrewing from the cup The coupling nut 6 serves to connect a tubular member 8 to the working *alve, the upper end of this member being threaded into the nut and locked thereto, if desired,

disposed pin 9, the parts being apertured for its reception.

The tubular member 8 is formed at its lower end to provide a preferably integral stirrup 10 the cross bar of which is enlarged, as at 11, and apertured to receive the connecting element of a tap 12 which may be locked in place by means of the pin or key 12. The side bars or arms of the stirrup are formed with lugs 13 which take into bayonet joint, or offset, slots 16 which are formed in the reduced portion 14 of a tubular member 15. The olisetor angled portions ot'the slots 16 are overlapped by latching springs 17 which are secured in any suitable manner to the portion 14 and the free or latching ends of these springs are, bent to take over the lugs 13 and to yieldingly retain the same in the angled portions of the slots.

A coiled spring 18 encircles the tubular member 8 and is confined between the lower end of the coupling nut fl and the upper end of the reduced portion 1 of the tubular member 15, and this spring serves to retain the tubular member 15 in its lowermost position, and also aids in re taining the lugs 13 normally in theangled portions of the slots 16.

The periphery of the lower end of the member 15 is scalloped, as indicated at 19 to engage with the cage or spider of the stand valve and lock the member 15 against rotation relative to the valve.

The stand pipe is of any usual form and consists of the valve seat 20 upon which is seatable downwardly the ball valve 21, the said ball valve confined within the cage 22 In practice the invention is operated in the following manner The D which is usually screwed on the lower end of the working valve is removed and the stand pipe tap substituted, the coupling nut 6 being threaded onto the lower ver 15 proeloYr the encl of the tap (he parts in ihis posi- ';01' the purpoee 'e (own noon in: seal, ping o1 ell-filing (he .eraiion.

0 remove me if V. 1th the a l 1s ihrne'li (lovinv tubular member 0 into bro-11g portion of like force of he th mp .2 who @0- l the threaded ($991k and, h 'liher revolut the red, the ten 15 ed with the mail" by wllluhmvm eaerlh cl the nwmilon. whetlay Letters Hi; alien with :1 1111131 inoluclill a slamv \ulx'e and \Yorlnng valve: oil

a member eeem'ed l0 and depending from lhe \xorlghlg "valve, a mp lule'pemlhlg V .0111 3951C member, :1 sleeve shcleble on The memher and nornmlly projecting below the ap,

ateni: be obtaine this billing nnelei' H e the sleeve nornml pyogeetlng below 'i'he m y. and means for llolcling the eleeve in HS -1 111 posh. on, :l means ylelchng' to 1 l the stand valve.

1 pe'unit the :11p to'engz ge B. illhe commnetlon \nth a pump lnclucl- Tlllg n eiaml valve a cage on the stand valve 5" having; threaded ogenlng. anal Worlnng valve; a member secured to and clepencling from the Working valve, lugs on the memhet, a tap secured to ancl. clegencling from l'he member, a sleeve slidable 011 the so ebel. sail Sleeve hm'ing angled slots for aim of the lugs; means tl'tor yield- 7 l:-.l0l1ll1 the lugs in the angled PDT .7 (:1 the slots, lhe sahl Sleeve non'mllly ating below the tap, lneahe for held 7 he RH in, 11. nomnal 'po' Lion, eblc wctions on the lower end of ihe sleeve engngeehle with the cage to hold the sleeve whereby to release the lugs to engage l V 'ul v 1e tap mm the cage.

that i claim the All. i'eethnohy foregoing as my a? 1, i. have hereto ahlied my $151121- in the presence of two Wll HESSQS.

HARRY E. HAMILTON. 

